What is the transfer rate for usb 2 and usb 3?
34472
This is from Wikipedia: USB 3.0 adds a new transfer mode called "SuperSpeed," (distinguishable from USB 2.0 by either the blue colour of the port or the initials SS) capable of transferring data at up to 5 Gbit/s - more than ten times as fast as the 480 Mbit/s top speed of USB 2.0.
534917
G-Technology G-DRIVE with Thunderbolt (0G03124) has a transfer rate of up to 165 MB/s. http://g-technology.com/products/g-drive-thunderbolt
678141
No. The motherboard header you are plugging into is USB 2.0 then that will cap you transfer speed.
1489842
Yeah. Basically you're routing a highway onto a surface street. The USB2 port can only do 60 megabytes per second (in a perfect world, more like 40 normally). USB3 can go 10x faster, but as soon as you try to squeeze it through USB2 it gets choked off.This still makes a damn good 10 port USB2 hub, and if you ever upgrade to USB3 you can transfer it.
74182
I believe they are USB 2. Transfer rates aren't even close to USB 2 rates directly from the computer. It works once set up, but is still a slow transfer for whatever is being moved.
976969
USB 2.0 can be used with USB 3.0 slots, you just won't get the transfer speed.
175879
USB devices are generally backward compatible. The transfer will be slower, though.
842370
The box only mentions USB 2.0. I would guess a USB 3.0 should be ok, just won't get the 3.0's speed rate for data.
774622
On a test I did, I got 100 MB/s with USB 3.0, compared to 25 MB/s with USB 2.0.
1190277
I actually haven't had a need for it yet, so I certainly haven't timed it. The specs are that it is USB 3, no matter what that is better than a USB 2.
1295120
Dear yes，You must use a usb 3.0。USB2.0 only 2.0 transmission effect，In addition to the transmission rate of the problem, the other is OK.
1866809
Yes but in XP your USB 3.0 will only run at 2.0 transfer speed... Not a big deal but you should have no problems.
149453
USB 2 rated at 480Mbp/sec. I know of no way to modify a Macbook pro for USB 3.0 if it is not already configured for 3.0. Hope that helps...
718437
It really doesn't matter, because no CD/DVD drive is going to send or receive data faster than USB 2.0 can comfortably handle. Having a USB 3.0 connection would not speed up the drive's performance. (As pointed out elsewhere, USB 3.0 ports are backward-compatible with USB 2.0 peripherals, so the drive will work whether the port you connect it to is USB 2.0 or 3.0.)
1459424
There won't be any performance advantage with USB3 port because data transfer to Dragonfly is well below maximum transfer rate for USB2. If you have any USB3 devices, such as external hard drive, you might as well reserve that port for them because they can use much higher transfer rate and data is simultaneously bi-directional.
121412
you certainly can use both USB 3.0 and USB 2.0; the only difference is transfer speed.
756626
no - USB ver 2there is a ethernet port if you want speedier access. Transferring files thru the device is not the fastest (as you would expect) but the process works fine.